diff --git a/Gemfile.lock b/Gemfile.lock
index 3c90b51..5f915c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
       rake
     rb_sys (0.9.86)
     regexp_parser (2.8.3)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)